Question

我正在尝试为我的项目构建一个CMakeLists.txt。它需要包括SDL，OpenGL和GLEW以及我所有的* .cpp和* .h文件在不同的目录中。 用于构建项目的所有文件都在调用cmake的项目源目录中。

错误：

In file included from /home/me/repos/AlchemyEngine/alchemy/alcEngine.cpp:1:0:
/home/me/repos/AlchemyEngine/alchemy/alcEngine.h:69:18: fatal error: glew.h: No such file or directory
 #include <glew.h>

我认为最简单的方法是在Visual Studio中显示设置此项目的步骤（该方法可以像我以前从那里开发一样工作），希望我能在CMakeLists.txt文件中重新创建设置时得到帮助。 / p>

在Visual Studio中设置项目

1. Includes

Project -> *ProjectName* Properties -> VC++ Directories
Click Include Directories -> Click down-arrow- > edit

Browse for the include files (...\SDL2-OpenGL-GLEW-VC++\include)

2. Libraries

Project -> *ProjectName* Properties -> VC++ Directories
Click Library Directories -> Click down-arrow -> edit

Browse for the library files (...\SDL2-OpenGL-GLEW-VC++\lib)

3. Linkers

Project -> *ProjectName* Properties -> Linker -> Input
Click Additional Dependencies -> Click down arrow -> edit

Copy into box:
SDL2.lib
SDL2main.lib
SDL2_image.lib
OpenGL32.lib
glu32.lib
glew32.lib

4. DLLs

Build project with chosen entry point to create Debug folder with executable.

Copy the .dll files from the ...\SDL-OpenGL-GLEW-VC++\dropInExe folder and paste into the
Debug folder with the project executable
(...\*Project Folder*\Debug)

这是我的CMakeLists.txt文件

cmake_minimum_required (VERSION 3.5)
project (AlchemyEngine)

set(CMAKE_BINARY_DIR ${CMAKE_SOURCE_DIR}/build/bin)
set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR})
set(LIBRARY_OUTPUT_PATH ${CMAKE_BINARY_DIR})

include_directories (
        alchemy/
        alchemy/event/
        alchemy/scene/
        alchemy/resource/
        alchemy/render/
        alchemy/util/
        game/
        #SDL2_OpenGL_GLEW_VC++/include
)

set( srcs
        alchemy/alcEngine.cpp
        alchemy/event/alcEvent.cpp
        alchemy/render/alcRenderer.cpp
        alchemy/render/alcSprite.cpp
        alchemy/resource/alcResource.cpp
        alchemy/resource/alcShader.cpp
        alchemy/resource/alcTexture.cpp
        alchemy/scene/alcObject.cpp
        alchemy/scene/alcScene.cpp
        alchemy/util/alcBlockAllocator.cpp
        alchemy/util/alcStackAllocator.cpp
        game/Player.cpp
        Main.cpp
)

add_library (libraries STATIC SDL2_OpenGL_GLEW_VC++/include/)

add_executable (alc ${PROJECT_SOURCE_DIR}/${srcs})

target_link_libraries(alc libraries)

set_target_properties(libraries PROPERTIES LINKER_LANGUAGE CXX)
set_target_properties(alc PROPERTIES LINKER_LANGUAGE CXX)

配置和生成后，$CMAKE_SOURCE_DIR/build/bin包含：

liblibraries.a  
glew32.dll  
libpng16-16.dll  
SDL2.dll  
SDL2_image.dll  
zlib1.dll

在我看来，我包含头文件的方法是不正确的，但是在CMake文档和其他堆栈交换中打乱信息并没有产生更好的结果。我感觉它与链接器步骤有关，但是我无法弄清楚如何在CMake中指定依赖项。

如果项目结构对于此问题如此重要，我也可以tree并发布输出。

最终编辑：

该错误已在以下答案中得到修复，这是我对任何感兴趣的人的最终CMakeLists.txt

# Outputs executable(s) in {PROJECT_SOURCE_DIR}/build/bin/

# specify min version and project name
cmake_minimum_required (VERSION 3.5)
project (AlchemyEngine)

# set output paths for binaries/executable
set(CMAKE_BINARY_DIR ${CMAKE_SOURCE_DIR}/build/bin)
set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR})
set(LIBRARY_OUTPUT_PATH ${CMAKE_BINARY_DIR})

# include project header files
include_directories (
        alchemy/
        alchemy/event/
        alchemy/scene/
        alchemy/resource/
        alchemy/render/
        alchemy/util/
        game/
)

# create source files definition
set( srcs
        alchemy/alcEngine.cpp
        alchemy/event/alcEvent.cpp
        alchemy/render/alcRenderer.cpp
        alchemy/render/alcSprite.cpp
        alchemy/resource/alcResource.cpp
        alchemy/resource/alcShader.cpp
        alchemy/resource/alcTexture.cpp
        alchemy/scene/alcObject.cpp
        alchemy/scene/alcScene.cpp
        alchemy/util/alcBlockAllocator.cpp
        alchemy/util/alcStackAllocator.cpp
        game/Player.cpp
        Main.cpp
)

# add a library target to be built from the source files
add_library (libraries STATIC SDL2_OpenGL_GLEW_VC++/lib/)
# specify include directories
target_include_directories(libraries PUBLIC SDL2_OpenGL_GLEW_VC++/include/)
# specify libraries to use when linking the library
target_link_libraries (libraries 
        ${PROJECT_SOURCE_DIR}/SDL2_OpenGL_GLEW_VC++/lib/glew32.lib
        ${PROJECT_SOURCE_DIR}/SDL2_OpenGL_GLEW_VC++/lib/glew32s.lib
        ${PROJECT_SOURCE_DIR}/SDL2_OpenGL_GLEW_VC++/lib/SDL2_image.lib
        ${PROJECT_SOURCE_DIR}/SDL2_OpenGL_GLEW_VC++/lib/SDL2.lib
        ${PROJECT_SOURCE_DIR}/SDL2_OpenGL_GLEW_VC++/lib/SDL2main.lib
)

# create the executable using the source files defined above
add_executable (alc ${PROJECT_SOURCE_DIR}/${srcs})
# specify the headers
target_include_directories(alc PUBLIC ${PROJECT_SOURCE_DIR})
# link the library to the project
target_link_libraries(alc libraries)

# force the linker language because there's some c stuff in the library files
set_target_properties(libraries PROPERTIES LINKER_LANGUAGE CXX)
set_target_properties(alc PROPERTIES LINKER_LANGUAGE CXX)

Answer 1

target_include_directories(libraries PRIVATE SDL2_OpenGL_GLEW_VC++/include/)应该使用PUBLIC，以便与libraries链接的任何可执行目标（例如target_link_libraries(alc libraries)）都知道此路径。

这是假设glew.h位于SDL2_OpenGL_GLEW_VC++/include/目录中。

由于target_include_directories使用的是相对路径（我很确定它是相对于源树的），因此需要确保此路径对您的目录树是正确的。

严重错误：glew.h：使用make时没有此类文件或目录

1 个答案: